|
Glassfish example source code file (BundleClassLoader.java)
The Glassfish BundleClassLoader.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 2009-2010 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package org.glassfish.osgijavaeebase; import org.osgi.framework.Bundle; import java.io.IOException; import java.net.URL; import java.security.AccessController; import java.security.PrivilegedActionException; import java.security.PrivilegedExceptionAction; import java.util.Enumeration; import java.util.NoSuchElementException; /** * This is a delegating class loader. * It always delegates to OSGi bundle's class loader. * ClassLoader.defineClass() is never called in the context of this class. * There will never be a class for which getClassLoader() * would return this class loader. * It overrides loadClass(), getResource() and getResources() as opposed to * their findXYZ() equivalents so that the OSGi export control mechanism * is enforced even for classes and resources available in the system/boot * class loader. * * @author Sanjeeb.Sahoo@Sun.COM */ public class BundleClassLoader extends ClassLoader { private Bundle bundle; public BundleClassLoader(Bundle b) { super(Bundle.class.getClassLoader()); this.bundle = b; } @Override public synchronized Class<?> loadClass(final String name, boolean resolve) throws ClassNotFoundException { return bundle.loadClass(name); } @Override public URL getResource(String name) { return bundle.getResource(name); } @Override public Enumeration<URL> getResources(String name) throws IOException { Enumeration<URL> resources = bundle.getResources(name); if (resources == null) { // This check is needed, because ClassLoader.getResources() // expects us to return an empty enumeration. resources = new Enumeration<URL>() { public boolean hasMoreElements() { return false; } public URL nextElement() { throw new NoSuchElementException(); } }; } return resources; } } Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish BundleClassLoader.java source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.